<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录页面</h1>
<form th:action="@{/perform_login}" method="post">
    <input type="text" th:name="username" placeholder="用户名"> <br>
    <input type="password" th:name="password" placeholder="密码"> <br>
    <input type="submit" value="登录">
</form>
</body>
</html>